Machine element or mechanism – Gearing – Rotary bodies
Patent
1997-02-11
1999-01-19
Davis, Cassandra
Machine element or mechanism
Gearing
Rotary bodies
744115, 40505, F16H 2708, G09F 1102
Patent
active
058603255
ABSTRACT:
A transmission system for louver type signs wherein the signs consist of a plurality of multiple faced louvers having indicia defined thereon and the side-by-side relationship of the louvers permits pre-selected faces to define a completed image. The adjacent transmissions are operated by a constantly rotating drive shaft and the louvers may be simultaneously rotated or may sequentially operate in a delayed manner wherein the indicia on the louvers is progressively revealed in a "wave" manner. The drive shafts of adjacent transmissions are interconnected and a plurality of transmissions are operated by a single constantly operating motor drive source, and in the disclosed embodiment, a complete rotation of the transmission's drive shaft produces one-third of a rotation of the output shafts operating the louvers. A positive detent lock operated by a cam formed on the drive shaft gear produces a positive locking of the output shaft and the position of the louver, and the detent is automatically engaged and released in the proper sequence by the cam.
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Havens Dale I.
Havens Jerry D.
Beaman Duncan F.
Davis Cassandra
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